MAXSORT can be invoked from programs written in COBOL, PL/1 or Assembler language. However, this is the least efficient method of executing MAXSORT and performance benefits will be realized if MAXSORT is initiated through job control language.
When MAXSORT is invoked from a program, the MAXSORT PARM should be specified in the $ORTPARM DD statement. The SYSIN DD statement is ignored.